▎ 摘　　要

NOVELTY - Preparation of carbon nanofiber-graphene composite aerogel involves preparing polyacrylonitrile spinning solution and polyacrylonitrile electrospinning nanofiber, pre-oxidizing nanofiber to obtain oxidized polyacrylonitrile nanofiber, homogenizing, dispersing the graphene oxide in deionized water, ultrasonically dispersing to obtain stable graphene oxide dispersion, mixing oxidized nanofiber with graphene oxide dispersion, ultrasonically treating and stirring, freezing in liquid nitrogen and drying to obtain oxidized polyacrylonitrile nanofiber-graphene oxide aerogel, and carbonizing. USE - Preparation of carbon nanofiber-graphene composite aerogel used in supercapacitor electrode material application (claimed). ADVANTAGE - The environmentally friendly method enables the preparation of carbon nanofiber-graphene composite aerogel having less weight, excellent porosity, elasticity and capacitance performance efficiently, by simple process without using toxic reagent. DETAILED DESCRIPTION - Preparation of carbon nanofiber-graphene composite aerogel involves preparing polyacrylonitrile spinning solution in an oil bath under stirring conditions, preparing polyacrylonitrile electrospinning nanofiber, pre-oxidizing polyacrylonitrile nanofiber through temperature control program to obtain oxidized polyacrylonitrile nanofiber, homogenizing, dispersing the graphene oxide in deionized water, ultrasonically dispersing to obtain a stable graphene oxide dispersion, mixing oxidized polyacrylonitrile nanofiber with graphene oxide dispersion, ultrasonically treating and stirring, freezing in liquid nitrogen and freeze-drying to obtain oxidized polyacrylonitrile nanofiber-graphene oxide aerogel, and high temperature carbonizing.